The main soil types and soil water physical properties of water conservation forest were studied in the paper, in Baipenzhu Reservoir of Guangdong Province.Results showed that the soil types of horizontal zonality were lateritic red soil. there are 4 soil types including lateritic red soil mountainous red soil, mountainous yellow soil and mountainous shrub meadow soil in vertical zonality. The vertical sequence of mountain soil types is very distinctness.The bulk weight was about 1.338 g·cm^-3. Contents of sand particles increased with altitude. Total porosities, non-capillary porosity and capillary porosity of the soil were 45%～50%,5%～9% and 35%～50% respectively. And non-capillary porosity was lower than capillary porosity. Under the different vegetation types, maximum water holding capability of soil were 30%～50%(be equivalent to 50～60 mm precipitation).Storage water capacity were 500～850 t·hm^-2(be equivalent to 50～85 mm precipitation), that of shrub meadow soil was the highest and mixed needleleaf broadleaf forest was second and gully broad leaved forest was the smallest. Drainage capacity was about 130～180 t·hm^-2 with that of shrub meadow soil was the highest and secondary broadleaved forest was the smallest. In Baipenzhu Reservoir of Guangdong Province, Drainage and Storage water capacities of the total forest areas were 62.69 and 316.29 ten thousand tons respectively. The effects and capabilities of dispel flood and compensate scanty of forest were very remarkable. Nevertheless, compared with the same forest types, the non-capillary porosity of water conservation forest in Baipenzhu Reservoir was relatively small than that of tropical and subtropical forests. The storage water capacities was smaller than that of the averages of forest types in Guangdong Province. Therefore, it is necessary to strengthen the conservation of water conservation forest and improvement the water conservation capacities of soil in Baipenzhu Reservoir.